Electric-lamp support



(No Model.) 2 Sheets-Sheet l.

J. NORTNEY &F. SOHEFOLD. ELECTRIC LAMP SUPPORT.

No. 497,200. I Patented May 9,1893.

WW Iran/(W M H Q 7 7 j James Jrorlmzy $557k w M 2 Sheets-Sheet 2. J.NORTNEY & F. SCHEPOLD.

ELBOTRIG LAMP SUPPORT.

Patented May 9, 1893.

(No Model.)

UNITED STATES PATENT OFFICE.

JAMES NORTNEY AND FRANK SCHEFOLD, OF NE\V ALBANY, INDIANA.

ELECTRIC-LAMP SUPPORT.

SPECIFICATION forming part of Letters Patent No. 497,200, dated May 9,1893. Application filed December 22, 1892. Serial No. 456,028. (Nomodel.)

To all whom it may concern:

Be it known that we, JAMES NORTNEY and FRANK SOHEFOLD,bth of New Albany,county of Floyd,and State of Indiana, have invented certain new anduseful Improvements in Electric-Lamp Supports,of which the following isa specification, reference being had to the accompanying drawings.

The object of our invention is to produce improved supports for electriclamps, especially the heavy kindswhich are used for are light currents.

Our invention consists in certain improvements upon the mechanism shownin our application for patent, Serial No. M0376, filed October 18, 1892;and also in certain improved mechanism for raising and lowering arclamps generally.

In the accompanying drawings, Figure 1 is a side elevation of an arclamp suspended from a reflector or shade, showing the latterin centralvertical section, and the lamp proper partially lowered. Fig. 2 is asimilar View, showing spring-actuated elevators, and showing the lampproper in the suspended position. Fig. 3 is a bottom plan view of theswitch-board detached; and Fig. 4. a top plan View thereof. Fig. is asimilar view of the switch-board shown in Fig. 2.

Referring to the figures on the drawings, 1 indicates a suitablesupport, as for example a reflector, screen, or shade.

2 indicates a switch-board fixedly secured by any suitable meansthereto.

3 indicates a suspending cord or the like.

4 indicates an arc lamp which carries upon its top movable hooks 5adapted to engage with and release contact-making and breaking supports6. The hooks and the contactmaking and breaking supports are the same asthose shown and described in our application above referred to, andrequire only incidental mention here.

7 indicates eyelets upon opposite sides of the lamp, to whichpulley-ropes 8 are attached for raising and lowering the lamp. Theseropes may pass over pulleys 9 and be raised and lowered as in theordinary manner over a guide pulley 10; or, as we prefer, they may bewound upon spring-actuated pulleys 11.

In the drawings coiled springs 12 are shown as the form of actuatingsprings, but any suitable substitute therefor may be used. \Vhen theordinary pulley ropes are used a guy a must be employed to steady thelamp-support and counterbalance the strain upon the pulley ropes as theyare employed in raising and lowering the lamp. By the employment of thespring-actuated pulleys the necessity for the use of all side wires isdispensed with, and a much neater effect in practice may be secured.

13 indicates the head of the lamp, which, in practice, in order toeffect connection between the hooks and their supports, must passthrough the aperture 14c into the top of the reflector. It will beobserved that the supports are necessarily located a short distanceapart. The diameter of the aperture let is therefore limited, and it isnecessary for practical convenience to employ head-guiding mechanism toinsure the passage of the head through the aperture in the switch-board.The mechanism which we prefer to employ for that purpose consists of aguide-board or plate 15 having apertures 16 for the passage of thepulley-ropes 8, and a central aperture for receiving and guiding thehead. The guide board is kept yieldingly normally elevated, as by aspiral spring 17. It will be perceived that a sufficient pull upon thepulley ropes will depress the guide-board after it has insured theentrance of the head into the aperture in the switch-board, compressingthe spring until the hooks have engaged with their support-s asrequired.

As will more fully appear upon reference to our application abovereferred to, it is necessary that the hooks, after engagement with thesupports, shall become loosened from their bearings. Ordinarily theweight of the lamp, after the release of the pulley-ropes, is ample forthis purpose. By the employment of spring-actuated pulleys, however,special provision must be made for accomplishing the same result. Inthis connection the spring 17 serves the double purpose of yieldinglysupporting the guide-board, and afterward for counteracting the force ofthe spring-actuated pulleys sufficiently to operate the hooks and thesupports.

In operating our device the mode of pro cedure is in all respectssimilar to that de scribed in our former application, the guideboardacting acting in the manner heretofore set forth in guiding the headthrough the aperture in the switch-board. I11 operating the lampsuspended from springactuated pulleys, assuming the parts to be in therelative position shown in Fig. 2, the operator lifts the lamp until thehooks drop tree from their supports, and then pulls it down against theforce of the springs 12. In restoring thelamp to its former position,after it has been pulled down, a light push upon the lamp is sufficientto set the springs in motion and impart momentum to it enough tocompress the spring 17 and engage the hooks upon the supports. Thereuponthe springs 12, acting in the manner above described, operate the hooksand supports to switch the current.

e desire to distinctly state that we do not intend to limit ourselves tothe details of construction herein shown and described; but reserve theright to modifyor vary them within the scope of our invention.

\Vhat we claim is- 1. The combination with an electric lamp having ahead and a support from which itis movably suspended, of a switch-boardfasened to the support, an aperture in the switchboard,and head-guidingmechanism upon the lamp, substantially as set forth.

2. The combination with a support, electric lamp having a head andpulley ropes adapted to raise and lower thelamp, of a switch-boardhaving an aperture fastened to the support, head-guiding mechanism uponthe lamp con.-

sisting of a guide board pierced to receive the head and pulley-ropes,and mechanism for yieldingly supporting the guide-board in proximity tothe top of the head, substantially as and for the purpose specified.

3. In combination with a support, are lamp having a head and pulleyropes adapted to raise and lower the lamp to and from the support, of aswitch-board fastened to the support having an aperture therein,contact-making and breaking supports, hooks upon the switch-board andtop of the lamp respectively, and head guiding mechanism upon the lampadapted to guide the head of thelamp through the aperture in theswitch-board, substantially as and for the purpose specified.

4. The combination with a support, springactuated pulleys pulley-ropesand arc lamp, of contact-making and breaking supports and hooks upon thesupport and the lamp respectively, and a spring carried upon the lampand adapted to exert a counter influence against the force of thespring-actuated pulleys to make contact through the contact-makingsupports, and hooks, substantially in the manner and for the purposedescribed.

In testimony of all which we have hereunto subscribed our names.

J AMES NORTN EV. FRANK SOIIEFOLD. Witnesses:

M. L. FREDERICK, M. D. CONDIFF.

